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Title: Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides

Abstract

Although the parent iron-based pnictides and chalcogenides are itinerant antiferromagnets, the use of local moment picture to understand their magnetic properties is still widespread. We study magnetic Raman scattering from a local moment perspective for various quantum spin models proposed for this new class of superconductors. These models vary greatly in the level of magnetic frustration and show a vastly different two-magnon Raman response. Light scattering by two-magnon excitations thus provides a robust and independent measure of the underlying spin interactions. In accord with other recent experiments, our results indicate that the amount of magnetic frustration in these systems may be small.

Authors:
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1022549
Report Number(s):
SLAC-PUB-14432
Journal ID: ISSN 0031--9007; TRN: US201118%%247
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Submitted to Physical Review Letters
Additional Journal Information:
Journal Volume: 106; Journal Issue: 6; Journal ID: ISSN 0031--9007
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CHALCOGENIDES; IRON; LIGHT SCATTERING; MAGNETIC PROPERTIES; PNICTIDES; SCATTERING; SPIN; SUPERCONDUCTORS; MATSCI

Citation Formats

Chen, C. C. Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides. United States: N. p., 2011. Web. doi:10.1103/PhysRevLett.106.067002.
Chen, C. C. Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides. United States. doi:10.1103/PhysRevLett.106.067002.
Chen, C. C. Mon . "Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides". United States. doi:10.1103/PhysRevLett.106.067002. https://www.osti.gov/servlets/purl/1022549.
@article{osti_1022549,
title = {Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides},
author = {Chen, C. C.},
abstractNote = {Although the parent iron-based pnictides and chalcogenides are itinerant antiferromagnets, the use of local moment picture to understand their magnetic properties is still widespread. We study magnetic Raman scattering from a local moment perspective for various quantum spin models proposed for this new class of superconductors. These models vary greatly in the level of magnetic frustration and show a vastly different two-magnon Raman response. Light scattering by two-magnon excitations thus provides a robust and independent measure of the underlying spin interactions. In accord with other recent experiments, our results indicate that the amount of magnetic frustration in these systems may be small.},
doi = {10.1103/PhysRevLett.106.067002},
journal = {Submitted to Physical Review Letters},
issn = {0031--9007},
number = 6,
volume = 106,
place = {United States},
year = {2011},
month = {8}
}